CN101537548A - Flux-cored welding wire for overlaying welding and application thereof - Google Patents
Flux-cored welding wire for overlaying welding and application thereof Download PDFInfo
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- CN101537548A CN101537548A CN200810034965A CN200810034965A CN101537548A CN 101537548 A CN101537548 A CN 101537548A CN 200810034965 A CN200810034965 A CN 200810034965A CN 200810034965 A CN200810034965 A CN 200810034965A CN 101537548 A CN101537548 A CN 101537548A
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Abstract
Aiming at the disadvantages and market demands of the prior art, the invention discloses a flux-cored welding wire for overlaying welding, which consists of a low-carbon steel strip and a flux core; the weight percentage composition of the flux core comprises: 1 to 3 percent of Mo, 2 to 6 percent of B, 1 to 4 percent of Si, 1 to 4 percent of Mn, 0.5 to 4 percent of C, 3 to 7 percent of Nb, 10 to 40 percent of Cr, 1 to 4 percent of Re and the balance of Fe. The filling amount of the flux core is 30 percent of the total weight of the flux-cored welding wire. The flux-cored welding wire for overlaying welding can be used for the overlaying welding of a wearproof belt of a drill rod of an oil field. Compared with the prior art, the flux-cored welding wire has excellent welding manufacturability, small splashing, good compatibility and good repeated overlaying weldability; and as the wearing resistance and antifriction performance of the wearproof belt of the welded drill rod are improved, the hardness of the wearproof belt reaches HRC 59-61.
Description
Technical field
The present invention relates to a kind of flux-cored welding wire for overlaying welding and uses thereof, specifically, relate to a kind of flux-cored wire that is used for oil field drilling rod wear-resistant belt built-up welding.
Background technology
In drilling process, drill string and casing wear are the problems that influences field produces exploitation always, the drill string wearing and tearing, and light then service life of reducing drill string, the serious drilling string failure that causes causes the serious economy loss and the wasting of resources; Casing wear gently then reduces casing string anti-squeeze ruin, internal pressure strength, influence drilling well, completion and mining operations quality and security subsequently, heavy then cause that casing string is crowded to be ruined, be out of shape and leak, cause full well to scrap sometimes.Therefore, prior art uses oil field drilling rod wear-resistant belt technology to protect drill string and casing string, but the drilling rod wear-resistant belt that uses in the market exists different separately shortcomings:
1) carbine abrasion-proof band: the hardness height, anti-wear performance is better, but antifriction performance is very poor, can cause heavy wear to sleeve pipe, and fragility is big, falls piece easily, influences drillng operation;
2) drilling rod wear-resistant belt of import: the antifriction performance that has is better, but anti-wear performance is relatively poor, find that in use in the oil field a bite well has not also bored, wear-resisting band but polishes, drilling well subsequently, be the wearing and tearing of drill finish knock-off joint and sleeve pipe or stratum, it is very serious to wear and tear, and the last word wearability and the antifriction performance that have are improved, but price is very expensive, and the user is difficult to accept;
3) wear-resisting carries product of other that uses on the market or anti-wear performance and antifriction performance are difficult to obtain rational balance, and perhaps welding technological properties is undesirable, and be perhaps relatively poor with the compatibility performance of the wear-resisting band of other kind, uses to be restricted etc.
Therefore, seek a kind of both had rational hardness, enough anti-wear performance and good antifriction performance, have again welding procedure good, reach the low oil field drilling rod wear-resistant belt of cost well with the compatibility of the wear-resisting band of other kind, must seek a kind of composition and the scientific and reasonable flux-cored wire of proportioning.
Summary of the invention
The objective of the invention is at the existing in prior technology defective and the market demand, a kind of flux-cored welding wire for overlaying welding is provided, make it can be used for the built-up welding of oil field drilling rod wear-resistant belt, to obtain a kind of both had rational hardness, enough anti-wear performance and good antifriction performance, have again welding procedure good, reach the low oil field drilling rod wear-resistant belt of cost well with the compatibility of the wear-resisting band of other kind.
For achieving the above object, the technical solution used in the present invention is as follows:
Flux-cored welding wire for overlaying welding of the present invention, constitute by mild-carbon steel strip and medicine core, it is characterized in that: the composition of described medicine core and respectively form percentage by weight and be: Mo 1～3%, B 2～6%, Si 1～4%, Mn 1～4%, C 0.5～4%, Nb 3～7%, Cr 10～40%, Re 1～4%, surplus is Fe.
The loading of described medicine core accounts for 30% of flux-cored wire gross weight.
The preparation technology of flux-cored welding wire for overlaying welding of the present invention is as follows:
1) preparation medicine core powder mixes the powder for preparing 50～60 minutes in mixing powder equipment then;
2) clean mild-carbon steel strip, in the welding wire forming process, add the medicine core powder that mixes then;
3) routinely technology carry out wire drawing and the layer walk around journey, promptly get flux-cored welding wire for overlaying welding of the present invention.
Flux-cored welding wire for overlaying welding of the present invention can be used for the built-up welding of oil field drilling rod wear-resistant belt.
Compare with existing similar technology, the present invention has following beneficial effect:
A) that wearability and antifriction quality have been realized scientifically and rationally is organic balanced for flux-cored wire of the present invention, the wear-resisting band that built-up welding is become has rational hardness, enough anti-wear performance and good antifriction performance, realize not only protecting the purpose of drilling rod but also protective casing, reduced the rotational resistance of drill string;
B) flux-cored wire of the present invention can built-up welding on the surface of new and old tool joint, heavy weight drill pipe, drill collar and various downhole tools to prolong their life-span;
C) welding procedure of flux-cored wire of the present invention is good, and it is little to splash;
D) compatibility of flux-cored wire of the present invention is good, and repeated overlaying weldability is good.
The specific embodiment
The present invention is described in further detail and completely below in conjunction with embodiment:
Embodiment 1
The medicine core of present embodiment is formed and respectively formed percentage by weight: Mo 1.0%, B 6.0%, Si 1.0%, Mn 1.0%, C 0.5%, Nb 3.0%, Cr 10%, Re 4.0%, Fe 73.5%.The sieve powder, the granularity that makes all medicine core powder is 80 orders; Preparation medicinal powder mixes the powder for preparing 50～60 minutes in mixing powder equipment then; Clean mild-carbon steel strip (SPCC-SD), in the welding wire forming process, add the medicine core powder that mixes then; At last routinely technology carry out wire drawing and the layer walk around journey, promptly get flux-cored welding wire for overlaying welding of the present invention.
Embodiment 2
The medicine core of present embodiment is formed and respectively formed percentage by weight: Mo 1.6%, B 5.0%, Si 1.8%, Mn 1.8%, C 1.0%, Nb 4.0%, Cr 18%, Re 3.4%, Fe 63.4%.Be prepared into flux-cored welding wire for overlaying welding by embodiment 1 described method.
Embodiment 3
The medicine core of present embodiment is formed and respectively formed percentage by weight: Mo 2.0%, B 4.0%, Si 2.6%, Mn 2.6%, C 2.0%, Nb 5.0%, Cr 25%, Re 2.6%, Fe 54.2%.Be prepared into flux-cored welding wire for overlaying welding by embodiment 1 described method.
Embodiment 4
The medicine core of present embodiment is formed and respectively formed percentage by weight: Mo 2.5%, B 3.0%, Si 3.4%, Mn 3.4%, C 3.0%, Nb 6.0%, Cr 33%, Re 1.8%, Fe 43.9%.Be prepared into flux-cored welding wire for overlaying welding by embodiment 1 described method.
Embodiment 5
The medicine core of present embodiment is formed and respectively formed percentage by weight: Mo 3.0%, B 2.0%, Si 4.0%, Mn 4.0%, C 4.0%, Nb 7.0%, Cr 40%, Re 1.0%, Fe 35.0%.Be prepared into flux-cored welding wire for overlaying welding by embodiment 1 described method.
Embodiment 6
With the flux-cored welding wire for overlaying welding built-up welding of above-mentioned preparation in the S135 tool joint, simulation oil drilling industrial and mineral condition, to the drilling rod wear-resistant belt of institute's built-up welding routinely technology carry out full-scale wear test in kind and material property testing, experimental result shows: the drilling rod wear-resistant belt by flux-cored welding wire for overlaying welding built-up welding of the present invention has only 9.53 to the wearing and tearing of sleeve pipe, and contrast material carbine abrasion-proof band reaches 21.5 to the wearing and tearing of sleeve pipe, and wear rate has reduced by 56%; In sleeve pipe during drilling well, only worn and torn 0.011 by the drilling rod wear-resistant belt of flux-cored welding wire for overlaying welding built-up welding of the present invention, and the carbine abrasion-proof belt wear reaches 0.0157, anti-wear performance has improved 30%; Hardness by the drilling rod wear-resistant belt of flux-cored welding wire for overlaying welding built-up welding of the present invention reaches HRC59～61.
Claims (3)
1. flux-cored welding wire for overlaying welding, constitute by mild-carbon steel strip and medicine core, it is characterized in that: the composition of described medicine core and respectively form percentage by weight and be: Mo 1～3%, B 2～6%, Si 1～4%, Mn 1～4%, C0.5～4%, Nb 3～7%, Cr 10～40%, Re 1～4%, surplus is Fe.
2. flux-cored welding wire for overlaying welding according to claim 1 is characterized in that: the loading of described medicine core accounts for 30% of flux-cored wire gross weight.
3. the purposes of the described flux-cored welding wire for overlaying welding of claim 1, it is characterized in that: described flux-cored welding wire for overlaying welding is used for the built-up welding of oil field drilling rod wear-resistant belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810034965A CN101537548A (en) | 2008-03-21 | 2008-03-21 | Flux-cored welding wire for overlaying welding and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810034965A CN101537548A (en) | 2008-03-21 | 2008-03-21 | Flux-cored welding wire for overlaying welding and application thereof |
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| CN101537548A true CN101537548A (en) | 2009-09-23 |
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| CN200810034965A Pending CN101537548A (en) | 2008-03-21 | 2008-03-21 | Flux-cored welding wire for overlaying welding and application thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029483A (en) * | 2010-12-15 | 2011-04-27 | 西安纳特石油技术有限公司 | Highly-antiwear drill pipe wear-resisting belt flux-cored wire |
| CN102275049A (en) * | 2011-08-01 | 2011-12-14 | 江西恒大高新技术股份有限公司 | Amorphously structured overlaying flux cored welding wire |
| CN102319968A (en) * | 2011-08-24 | 2012-01-18 | 北京工业大学 | High-boron high-chromium wear-resistant surfacing flux-cored welding wire |
| CN102335798A (en) * | 2011-08-31 | 2012-02-01 | 吉林大学 | New high-chromium alloy cast iron surfacing material |
| CN102554494A (en) * | 2010-12-17 | 2012-07-11 | 江苏耐尔冶电集团有限公司 | Novel high wear resistant flux-cored wire |
| CN103894756A (en) * | 2014-03-29 | 2014-07-02 | 北京工业大学 | Fe-Nb-Mo-Cr-Mn-B iron-based surfacing flux-cored wire for wear-resistant strip of drill rod joint |
| CN105817787A (en) * | 2015-12-24 | 2016-08-03 | 吉林大学 | Abrasion-resistant surfacing anti-fatigue welding material on surface of cement extrusion roller and application |
| CN108145340A (en) * | 2017-12-22 | 2018-06-12 | 珠海弘德表面技术有限公司 | A kind of heat resistant and wear resistant grain for distributor chute wears welding wire and preparation method |
| CN108687462A (en) * | 2017-04-11 | 2018-10-23 | 湖北宜飞复合新材料有限公司 | A kind of anti abrasive flux-cored wire |
| CN114959435A (en) * | 2022-05-26 | 2022-08-30 | 中联先进钢铁材料技术有限责任公司 | Nb-Cr-Fe ternary intermediate alloy and preparation method and application thereof |
| CN116275682A (en) * | 2023-05-25 | 2023-06-23 | 西安热工研究院有限公司 | In-situ carbide reinforced abrasion-resistant flux-cored wire and preparation method thereof |
-
2008
- 2008-03-21 CN CN200810034965A patent/CN101537548A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029483A (en) * | 2010-12-15 | 2011-04-27 | 西安纳特石油技术有限公司 | Highly-antiwear drill pipe wear-resisting belt flux-cored wire |
| CN102554494A (en) * | 2010-12-17 | 2012-07-11 | 江苏耐尔冶电集团有限公司 | Novel high wear resistant flux-cored wire |
| CN102275049A (en) * | 2011-08-01 | 2011-12-14 | 江西恒大高新技术股份有限公司 | Amorphously structured overlaying flux cored welding wire |
| CN102319968A (en) * | 2011-08-24 | 2012-01-18 | 北京工业大学 | High-boron high-chromium wear-resistant surfacing flux-cored welding wire |
| CN102335798A (en) * | 2011-08-31 | 2012-02-01 | 吉林大学 | New high-chromium alloy cast iron surfacing material |
| CN103894756A (en) * | 2014-03-29 | 2014-07-02 | 北京工业大学 | Fe-Nb-Mo-Cr-Mn-B iron-based surfacing flux-cored wire for wear-resistant strip of drill rod joint |
| CN105817787A (en) * | 2015-12-24 | 2016-08-03 | 吉林大学 | Abrasion-resistant surfacing anti-fatigue welding material on surface of cement extrusion roller and application |
| CN108687462A (en) * | 2017-04-11 | 2018-10-23 | 湖北宜飞复合新材料有限公司 | A kind of anti abrasive flux-cored wire |
| CN108145340A (en) * | 2017-12-22 | 2018-06-12 | 珠海弘德表面技术有限公司 | A kind of heat resistant and wear resistant grain for distributor chute wears welding wire and preparation method |
| CN108145340B (en) * | 2017-12-22 | 2020-09-29 | 珠海弘德表面技术有限公司 | High-temperature-resistant abrasive-particle-wear-resistant welding wire for distribution chute and preparation method |
| CN114959435A (en) * | 2022-05-26 | 2022-08-30 | 中联先进钢铁材料技术有限责任公司 | Nb-Cr-Fe ternary intermediate alloy and preparation method and application thereof |
| CN116275682A (en) * | 2023-05-25 | 2023-06-23 | 西安热工研究院有限公司 | In-situ carbide reinforced abrasion-resistant flux-cored wire and preparation method thereof |
| CN116275682B (en) * | 2023-05-25 | 2023-09-08 | 西安热工研究院有限公司 | In-situ carbide reinforced abrasion-resistant flux-cored wire and preparation method thereof |
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Open date: 20090923 |